ID: 7703

AQSQID: 840080290007

Site Name: Paonia

Added: April 21, 2020, 6:24 p.m.

Updated: March 6, 2021, 5:32 p.m.

Location: Paonia (Colorado Hwy 133), CO

Reporting: True, Located: True

Current AQI: 37.0

Paonia (Colorado Hwy 133) CO, US: 38.8763, -107.6022

Date Observed (UTC) NOX NO NOY NO2 NO2Y SO2 OZONE CO PM10 PM2.5 AQI AQI/500
March 6, 2021, 4 p.m. 1.5 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (37) N/A 11.0 μg/m3 (11) -0.5 μg/m3 (0) 37.0
 
March 6, 2021, 3 p.m. 1.4 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (36) N/A 2.0 μg/m3 (2) N/A 36.0
 
March 6, 2021, 2 p.m. 1.1 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (35) N/A 3.0 μg/m3 (3) 1.0 μg/m3 (5) 35.0
 
March 6, 2021, 1 p.m. 1.3 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A 38.0 ppb (36) N/A 3.0 μg/m3 (3) -0.3 μg/m3 (0) 36.0
 
March 6, 2021, noon 0.8 ppb (1) 0.4 ppb (1) N/A 0.0 ppb (0) N/A N/A 38.0 ppb (36) N/A 3.0 μg/m3 (3) 4.3 μg/m3 (18) 36.0
 
March 6, 2021, 11 a.m. 0.8 ppb (1) 0.4 ppb (1) N/A 0.0 ppb (0) N/A N/A 37.0 ppb (35) N/A 1.0 μg/m3 (1) -1.3 μg/m3 (0) 35.0
 
March 6, 2021, 10 a.m. 0.9 ppb (1) 0.6 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A N/A 2.0 μg/m3 (2) 0.1 μg/m3 (1) 2.0
 
March 6, 2021, 9 a.m. 0.9 ppb (1) 0.4 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A N/A 7.0 μg/m3 (7) 1.1 μg/m3 (5) 7.0
 
March 6, 2021, 8 a.m. 0.9 ppb (1) 0.5 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A N/A 6.0 μg/m3 (6) -2.3 μg/m3 (0) 6.0
 
March 6, 2021, 7 a.m. 0.9 ppb (1) 0.6 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A N/A 3.0 μg/m3 (3) 4.1 μg/m3 (18) 18.0
 
March 6, 2021, 6 a.m. 1.1 ppb (2) 0.6 ppb (1) N/A 0.0 ppb (0) N/A N/A 36.0 ppb (34) N/A 2.0 μg/m3 (2) -0.8 μg/m3 (0) 34.0
 
March 6, 2021, 5 a.m. 1.1 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (32) N/A 3.0 μg/m3 (3) 6.6 μg/m3 (28) 32.0
 
March 6, 2021, 4 a.m. 2.3 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 33.0 ppb (31) N/A 5.0 μg/m3 (5) 2.0 μg/m3 (9) 31.0
 
March 6, 2021, 3 a.m. 2.2 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 31.0 ppb (29) N/A 2.0 μg/m3 (2) -3.1 μg/m3 (0) 29.0
 
March 6, 2021, 2 a.m. 3.4 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 31.0 ppb (29) N/A 6.0 μg/m3 (6) 2.4 μg/m3 (10) 29.0
 
March 6, 2021, 1 a.m. 3.6 ppb (4) 0.8 ppb (1) N/A 3.0 ppb (3) N/A N/A 32.0 ppb (30) N/A 5.0 μg/m3 (5) -4.7 μg/m3 (0) 30.0
 
March 6, 2021, midnight 5.5 ppb (6) 1.8 ppb (2) N/A 4.0 ppb (4) N/A N/A 40.0 ppb (38) N/A 4.0 μg/m3 (4) 2.8 μg/m3 (12) 38.0
 
March 5, 2021, 11 p.m. 1.3 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (43) N/A 1.0 μg/m3 (1) 2.8 μg/m3 (12) 43.0
 
March 5, 2021, 10 p.m. 1.4 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (43) N/A 5.0 μg/m3 (5) 3.1 μg/m3 (13) 43.0
 
March 5, 2021, 9 p.m. 1.7 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (42) N/A 2.0 μg/m3 (2) 1.1 μg/m3 (5) 42.0
 
March 5, 2021, 8 p.m. 1.2 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (42) N/A 5.0 μg/m3 (5) 3.8 μg/m3 (16) 42.0
 
March 5, 2021, 7 p.m. 1.4 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (41) N/A 6.0 μg/m3 (6) 2.6 μg/m3 (11) 41.0
 
March 5, 2021, 6 p.m. 1.7 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (40) N/A 11.0 μg/m3 (11) 3.4 μg/m3 (15) 40.0
 
March 5, 2021, 5 p.m. 2.0 ppb (2) 0.9 ppb (1) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (38) N/A 11.0 μg/m3 (11) 3.0 μg/m3 (13) 38.0
 
March 5, 2021, 4 p.m. 1.4 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (35) N/A 14.0 μg/m3 (13) 9.3 μg/m3 (39) 39.0
 
March 5, 2021, 3 p.m. 1.4 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (32) N/A 12.0 μg/m3 (12) 6.5 μg/m3 (28) 32.0
 
March 5, 2021, 2 p.m. 1.5 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A 33.0 ppb (31) N/A 3.0 μg/m3 (3) 3.2 μg/m3 (14) 31.0
 
March 5, 2021, 1 p.m. 1.4 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (32) N/A 0.0 μg/m3 (0) -0.3 μg/m3 (0) 32.0
 
March 5, 2021, noon 3.5 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 29.0 ppb (27) N/A 0.0 μg/m3 (0) 3.7 μg/m3 (16) 27.0
 
March 5, 2021, 11 a.m. 2.6 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A 31.0 ppb (29) N/A 9.0 μg/m3 (9) 4.3 μg/m3 (18) 29.0
 
March 5, 2021, 10 a.m. 1.4 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A 7.0 μg/m3 (7) 3.2 μg/m3 (14) 14.0
 
March 5, 2021, 9 a.m. 1.6 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A -1.0 μg/m3 (0) 7.6 μg/m3 (32) 32.0
 
March 5, 2021, 8 a.m. 1.8 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A 0.0 μg/m3 (0) 5.6 μg/m3 (24) 24.0
 
March 5, 2021, 7 a.m. 1.8 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A -2.3 μg/m3 (0) 2.0
 
March 5, 2021, 6 a.m. 3.0 ppb (3) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A 20.0 ppb (19) N/A 4.0 μg/m3 (4) 4.4 μg/m3 (19) 19.0
 
March 5, 2021, 5 a.m. 1.9 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A 25.0 ppb (24) N/A 4.0 μg/m3 (4) 3.3 μg/m3 (14) 24.0
 
March 5, 2021, 4 a.m. 2.2 ppb (3) 0.5 ppb (1) N/A 2.0 ppb (2) N/A N/A 28.0 ppb (26) N/A 0.0 μg/m3 (0) 2.7 μg/m3 (12) 26.0
 
March 5, 2021, 3 a.m. 3.1 ppb (3) 1.2 ppb (2) N/A 2.0 ppb (2) N/A N/A 33.0 ppb (31) N/A 5.0 μg/m3 (5) -1.3 μg/m3 (0) 31.0
 
March 5, 2021, 2 a.m. 2.8 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (36) N/A 6.0 μg/m3 (6) 0.4 μg/m3 (2) 36.0
 
March 5, 2021, 1 a.m. 1.2 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (40) N/A 7.0 μg/m3 (7) 4.1 μg/m3 (18) 40.0
 
March 5, 2021, midnight 2.4 ppb (3) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 40.0 ppb (38) N/A 15.0 μg/m3 (14) 1.0 μg/m3 (5) 38.0
 
March 4, 2021, 11 p.m. 1.1 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (43) N/A 13.0 μg/m3 (13) N/A 43.0
 
March 4, 2021, 10 p.m. 1.3 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A 47.0 ppb (44) N/A 7.0 μg/m3 (7) 4.1 μg/m3 (18) 44.0
 
March 4, 2021, 9 p.m. 1.2 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 47.0 ppb (44) N/A 13.0 μg/m3 (13) -0.4 μg/m3 (0) 44.0
 
March 4, 2021, 8 p.m. 1.5 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (42) N/A 3.0 μg/m3 (3) 2.0 μg/m3 (9) 42.0
 
March 4, 2021, 7 p.m. 1.8 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (43) N/A 14.0 μg/m3 (13) 1.0 μg/m3 (5) 43.0
 
March 4, 2021, 6 p.m. 1.3 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (42) N/A 7.0 μg/m3 (7) 5.8 μg/m3 (25) 42.0
 
March 4, 2021, 5 p.m. 1.7 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (41) N/A 2.0 μg/m3 (2) 5.4 μg/m3 (23) 41.0
 
March 4, 2021, 4 p.m. 2.1 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (39) N/A 3.0 μg/m3 (3) -2.6 μg/m3 (0) 39.0
 
March 4, 2021, 3 p.m. 2.1 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (38) N/A 6.0 μg/m3 (6) N/A 38.0
 
March 4, 2021, 2 p.m. 2.3 ppb (3) 0.9 ppb (1) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (38) N/A 1.0 μg/m3 (1) 5.0 μg/m3 (21) 38.0
 
March 4, 2021, 1 p.m. 1.7 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (38) N/A 3.0 μg/m3 (3) 2.7 μg/m3 (12) 38.0
 
March 4, 2021, noon 2.0 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A N/A 32.0 ppb (30) N/A 12.0 μg/m3 (12) 1.3 μg/m3 (6) 30.0
 
March 4, 2021, 11 a.m. 2.2 ppb (3) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 33.0 ppb (31) N/A 16.0 μg/m3 (15) 3.0 μg/m3 (13) 31.0
 
March 4, 2021, 10 a.m. 1.3 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A 9.0 μg/m3 (9) 5.3 μg/m3 (23) 23.0
 
March 4, 2021, 9 a.m. 2.0 ppb (2) 0.3 ppb (1) N/A 2.0 ppb (2) N/A N/A N/A N/A -3.0 μg/m3 (0) 4.3 μg/m3 (18) 18.0
 
March 4, 2021, 8 a.m. 1.3 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (35) N/A 5.0 μg/m3 (5) -4.8 μg/m3 (0) 35.0
 
March 4, 2021, 7 a.m. 1.2 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A 3.0 μg/m3 (3) -0.2 μg/m3 (0) 3.0
 
March 4, 2021, 6 a.m. 1.4 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (38) N/A 5.0 μg/m3 (5) 5.1 μg/m3 (22) 38.0
 
March 4, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 1.0 μg/m3 (1) -2.1 μg/m3 (0) 1.0
 
March 4, 2021, 4 a.m. 1.1 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (41) N/A 9.0 μg/m3 (9) 1.6 μg/m3 (7) 41.0
 
March 4, 2021, 3 a.m. 2.1 ppb (2) 0.5 ppb (1) N/A 2.0 ppb (2) N/A N/A 41.0 ppb (38) N/A 3.0 μg/m3 (3) 0.7 μg/m3 (3) 38.0
 
March 4, 2021, 2 a.m. 4.0 ppb (4) 1.0 ppb (1) N/A 3.0 ppb (3) N/A N/A 34.0 ppb (32) N/A 1.0 μg/m3 (1) -0.8 μg/m3 (0) 32.0
 
March 4, 2021, 1 a.m. 2.9 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 36.0 ppb (34) N/A 2.0 μg/m3 (2) 4.9 μg/m3 (21) 34.0
 
March 4, 2021, midnight 1.9 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (42) N/A 5.0 μg/m3 (5) 2.6 μg/m3 (11) 42.0
 
March 3, 2021, 11 p.m. 1.2 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 49.0 ppb (46) N/A 9.0 μg/m3 (9) -0.1 μg/m3 (0) 46.0
 
March 3, 2021, 10 p.m. 1.1 ppb (2) 0.7 ppb (1) N/A 0.0 ppb (0) N/A N/A 50.0 ppb (47) N/A 6.0 μg/m3 (6) 0.2 μg/m3 (1) 47.0
 
March 3, 2021, 9 p.m. 1.5 ppb (2) 0.9 ppb (1) N/A 1.0 ppb (1) N/A N/A 50.0 ppb (47) N/A 2.0 μg/m3 (2) 1.1 μg/m3 (5) 47.0
 
March 3, 2021, 8 p.m. 1.0 ppb (1) 0.5 ppb (1) N/A 0.0 ppb (0) N/A N/A 50.0 ppb (47) N/A 1.0 μg/m3 (1) 1.3 μg/m3 (6) 47.0
 
March 3, 2021, 7 p.m. 0.9 ppb (1) 0.4 ppb (1) N/A 0.0 ppb (0) N/A N/A 47.0 ppb (44) N/A 8.0 μg/m3 (8) 4.4 μg/m3 (19) 44.0
 
March 3, 2021, 6 p.m. 1.7 ppb (2) 0.9 ppb (1) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (40) N/A 10.0 μg/m3 (10) 7.9 μg/m3 (33) 40.0
 
March 3, 2021, 5 p.m. 1.0 ppb (1) 0.6 ppb (1) N/A 0.0 ppb (0) N/A N/A 40.0 ppb (38) N/A 11.0 μg/m3 (11) 8.2 μg/m3 (35) 38.0
 
March 3, 2021, 4 p.m. 1.6 ppb (2) 0.9 ppb (1) N/A 1.0 ppb (1) N/A N/A 37.0 ppb (35) N/A 4.0 μg/m3 (4) 3.4 μg/m3 (15) 35.0
 
March 3, 2021, 3 p.m. 1.6 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (33) N/A 0.0 μg/m3 (0) 1.6 μg/m3 (7) 33.0
 
March 3, 2021, 2 p.m. 1.2 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (33) N/A 4.0 μg/m3 (4) 6.0 μg/m3 (25) 33.0
 
March 3, 2021, 1 p.m. 1.4 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (33) N/A 1.0 μg/m3 (1) -3.2 μg/m3 (0) 33.0
 
March 3, 2021, noon 1.7 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 34.0 ppb (32) N/A 1.0 μg/m3 (1) 1.8 μg/m3 (8) 32.0
 
March 3, 2021, 11 a.m. 1.3 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (33) N/A 3.0 μg/m3 (3) 2.9 μg/m3 (13) 33.0
 
March 3, 2021, 10 a.m. 1.3 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0 μg/m3 (1) 2.4 μg/m3 (10) 10.0
 
March 3, 2021, 9 a.m. 0.8 ppb (1) 0.4 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A N/A 1.0 μg/m3 (1) 3.9 μg/m3 (17) 17.0
 
March 3, 2021, 8 a.m. 0.7 ppb (1) 0.3 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A N/A 4.0 μg/m3 (4) 4.5 μg/m3 (19) 19.0
 
March 3, 2021, 7 a.m. 0.8 ppb (1) 0.6 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A N/A 11.0 μg/m3 (11) 9.8 μg/m3 (41) 41.0
 
March 3, 2021, 6 a.m. 0.8 ppb (1) 0.4 ppb (1) N/A 0.0 ppb (0) N/A N/A 34.0 ppb (32) N/A 0.0 μg/m3 (0) 0.2 μg/m3 (1) 32.0
 
March 3, 2021, 5 a.m. 0.8 ppb (1) 0.4 ppb (1) N/A 0.0 ppb (0) N/A N/A 33.0 ppb (31) N/A 3.0 μg/m3 (3) 3.9 μg/m3 (17) 31.0
 
March 3, 2021, 4 a.m. 2.8 ppb (3) 0.8 ppb (1) N/A 2.0 ppb (2) N/A N/A 29.0 ppb (27) N/A 6.0 μg/m3 (6) 1.4 μg/m3 (6) 27.0
 
March 3, 2021, 3 a.m. 7.8 ppb (8) 2.0 ppb (2) N/A 6.0 ppb (6) N/A N/A 26.0 ppb (25) N/A 4.0 μg/m3 (4) 0.6 μg/m3 (3) 25.0
 
March 3, 2021, 2 a.m. 7.6 ppb (8) 2.3 ppb (3) N/A 5.0 ppb (5) N/A N/A 27.0 ppb (25) N/A 0.0 μg/m3 (0) -4.1 μg/m3 (0) 25.0
 
March 3, 2021, 1 a.m. 5.5 ppb (6) 2.0 ppb (2) N/A 3.0 ppb (3) N/A N/A 30.0 ppb (28) N/A 7.0 μg/m3 (7) -3.1 μg/m3 (0) 28.0
 
March 3, 2021, midnight 2.6 ppb (3) 1.0 ppb (1) N/A 2.0 ppb (2) N/A N/A 38.0 ppb (36) N/A 2.0 μg/m3 (2) -1.7 μg/m3 (0) 36.0
 
March 2, 2021, 11 p.m. 1.0 ppb (1) 0.6 ppb (1) N/A 0.0 ppb (0) N/A N/A 42.0 ppb (39) N/A 6.0 μg/m3 (6) 1.4 μg/m3 (6) 39.0
 
March 2, 2021, 10 p.m. 1.2 ppb (2) 0.7 ppb (1) N/A 0.0 ppb (0) N/A N/A 41.0 ppb (38) N/A 1.0 μg/m3 (1) 0.1 μg/m3 (1) 38.0
 
March 2, 2021, 9 p.m. 1.0 ppb (1) 0.7 ppb (1) N/A 0.0 ppb (0) N/A N/A 40.0 ppb (38) N/A 2.0 μg/m3 (2) 0.2 μg/m3 (1) 38.0
 
March 2, 2021, 8 p.m. 1.2 ppb (2) 0.8 ppb (1) N/A 0.0 ppb (0) N/A N/A 40.0 ppb (38) N/A 6.0 μg/m3 (6) -0.2 μg/m3 (0) 38.0
 
March 2, 2021, 7 p.m. 1.1 ppb (2) 0.7 ppb (1) N/A 0.0 ppb (0) N/A N/A 42.0 ppb (39) N/A 8.0 μg/m3 (8) 2.2 μg/m3 (10) 39.0
 
March 2, 2021, 6 p.m. 1.2 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (39) N/A 15.0 μg/m3 (14) 3.7 μg/m3 (16) 39.0
 
March 2, 2021, 5 p.m. 1.0 ppb (1) 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (38) N/A 14.0 μg/m3 (13) 2.2 μg/m3 (10) 38.0
 
March 2, 2021, 4 p.m. 1.2 ppb (2) 0.7 ppb (1) N/A 0.0 ppb (0) N/A N/A 37.0 ppb (35) N/A 5.0 μg/m3 (5) 0.1 μg/m3 (1) 35.0
 
March 2, 2021, 3 p.m. 1.2 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (34) N/A 6.0 μg/m3 (6) -3.6 μg/m3 (0) 34.0
 
March 2, 2021, 2 p.m. 1.1 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (34) N/A 5.0 μg/m3 (5) -0.1 μg/m3 (0) 34.0
 
March 2, 2021, 1 p.m. 1.4 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (34) N/A 0.0 μg/m3 (0) -1.3 μg/m3 (0) 34.0
 
March 2, 2021, noon 1.0 ppb (1) 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A 35.0 ppb (33) N/A 4.0 μg/m3 (4) 5.3 μg/m3 (23) 33.0
 
March 2, 2021, 11 a.m. 1.2 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 36.0 ppb (34) N/A 0.0 μg/m3 (0) 1.8 μg/m3 (8) 34.0
 
March 2, 2021, 10 a.m. 1.1 ppb (2) 0.7 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A N/A 3.0 μg/m3 (3) -3.0 μg/m3 (0) 3.0
 
March 2, 2021, 9 a.m. 1.1 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A 0.0 μg/m3 (0) 2.8 μg/m3 (12) 12.0
 
March 2, 2021, 8 a.m. 0.9 ppb (1) 0.4 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A N/A 2.0 μg/m3 (2) 0.1 μg/m3 (1) 2.0
 
March 2, 2021, 7 a.m. 1.1 ppb (2) 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A -2.0 μg/m3 (0) N/A 2.0
 
March 2, 2021, 6 a.m. 1.5 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 33.0 ppb (31) N/A 5.0 μg/m3 (5) -0.8 μg/m3 (0) 31.0
 
March 2, 2021, 5 a.m. 2.1 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A 31.0 ppb (29) N/A 3.0 μg/m3 (3) 2.5 μg/m3 (11) 29.0
 
March 2, 2021, 4 a.m. 2.0 ppb (2) 0.4 ppb (1) N/A 2.0 ppb (2) N/A N/A 29.0 ppb (27) N/A 5.0 μg/m3 (5) 4.3 μg/m3 (18) 27.0
 
March 2, 2021, 3 a.m. 5.0 ppb (5) 1.0 ppb (1) N/A 4.0 ppb (4) N/A N/A 27.0 ppb (25) N/A 3.0 μg/m3 (3) 1.1 μg/m3 (5) 25.0
 
March 2, 2021, 2 a.m. 2.1 ppb (2) 0.6 ppb (1) N/A 2.0 ppb (2) N/A N/A 31.0 ppb (29) N/A 6.0 μg/m3 (6) 3.7 μg/m3 (16) 29.0
 
March 2, 2021, 1 a.m. 3.2 ppb (4) 1.1 ppb (2) N/A 2.0 ppb (2) N/A N/A 33.0 ppb (31) N/A 3.0 μg/m3 (3) -3.9 μg/m3 (0) 31.0
 
March 2, 2021, midnight 2.2 ppb (3) 0.8 ppb (1) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (38) N/A 8.0 μg/m3 (8) 1.7 μg/m3 (8) 38.0
 
March 1, 2021, 11 p.m. 1.4 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A 44.0 ppb (41) N/A 3.0 μg/m3 (3) -0.6 μg/m3 (0) 41.0
 
March 1, 2021, 10 p.m. 1.4 ppb (2) 0.9 ppb (1) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (42) N/A 4.0 μg/m3 (4) 1.5 μg/m3 (7) 42.0
 
March 1, 2021, 9 p.m. 1.3 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (43) N/A 4.0 μg/m3 (4) 0.2 μg/m3 (1) 43.0
 
March 1, 2021, 8 p.m. 1.5 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (42) N/A 0.0 μg/m3 (0) 0.5 μg/m3 (3) 42.0
 
March 1, 2021, 7 p.m. 1.3 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (43) N/A 5.0 μg/m3 (5) 3.1 μg/m3 (13) 43.0
 
March 1, 2021, 6 p.m. 1.3 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A 46.0 ppb (43) N/A 11.0 μg/m3 (11) 2.6 μg/m3 (11) 43.0
 
March 1, 2021, 5 p.m. 1.1 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (42) N/A 18.0 μg/m3 (17) 7.4 μg/m3 (31) 42.0
 
March 1, 2021, 4 p.m. 1.2 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 42.0 ppb (39) N/A 7.0 μg/m3 (7) 27.3 μg/m3 (83) 83.0
 
March 1, 2021, 3 p.m. 1.1 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (38) N/A 3.0 μg/m3 (3) 32.2 μg/m3 (94) 94.0
 
March 1, 2021, 2 p.m. 1.4 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (38) N/A 10.0 μg/m3 (10) 6.3 μg/m3 (27) 38.0
 
March 1, 2021, 1 p.m. 1.3 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 40.0 ppb (38) N/A -2.0 μg/m3 (0) -2.6 μg/m3 (0) 38.0
 
March 1, 2021, noon 1.7 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (38) N/A 7.0 μg/m3 (7) -0.7 μg/m3 (0) 38.0
 
March 1, 2021, 11 a.m. 1.0 ppb (1) 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (38) N/A 0.0 μg/m3 (0) -0.2 μg/m3 (0) 38.0
 
March 1, 2021, 10 a.m. 23.3 ppb (22) 22.9 ppb (22) N/A 0.0 ppb (0) N/A N/A 35.0 ppb (33) N/A 3.0 μg/m3 (3) -1.1 μg/m3 (0) 33.0
 
March 1, 2021, 9 a.m. 40.7 ppb (39) 40.3 ppb (39) N/A 0.0 ppb (0) N/A N/A 31.0 ppb (29) N/A 6.0 μg/m3 (6) 2.8 μg/m3 (12) 39.0
 
March 1, 2021, 8 a.m. 0.8 ppb (1) 0.3 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A N/A 4.0 μg/m3 (4) -3.5 μg/m3 (0) 4.0
 
March 1, 2021, 7 a.m. 1.4 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A 1.0 μg/m3 (1) N/A 2.0
 
March 1, 2021, 6 a.m. 1.3 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (38) N/A 2.0 μg/m3 (2) 2.4 μg/m3 (10) 38.0
 
March 1, 2021, 5 a.m. N/A N/A N/A N/A N/A N/A N/A N/A 8.0 μg/m3 (8) 0.5 μg/m3 (3) 8.0
 
March 1, 2021, 4 a.m. 1.3 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (38) N/A 0.0 μg/m3 (0) 4.1 μg/m3 (18) 38.0
 
March 1, 2021, 3 a.m. 2.5 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 35.0 ppb (33) N/A 7.0 μg/m3 (7) 3.0 μg/m3 (13) 33.0
 
March 1, 2021, 2 a.m. 5.2 ppb (5) 0.7 ppb (1) N/A 5.0 ppb (5) N/A N/A 32.0 ppb (30) N/A 7.0 μg/m3 (7) -2.0 μg/m3 (0) 30.0
 
March 1, 2021, 1 a.m. 2.0 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (37) N/A 5.0 μg/m3 (5) -3.5 μg/m3 (0) 37.0
 
March 1, 2021, midnight 2.3 ppb (3) 1.0 ppb (1) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (40) N/A 3.0 μg/m3 (3) -2.6 μg/m3 (0) 40.0
 
Feb. 28, 2021, 11 p.m. 1.1 ppb (2) 0.7 ppb (1) N/A 0.0 ppb (0) N/A N/A 45.0 ppb (42) N/A 9.0 μg/m3 (9) -4.2 μg/m3 (0) 42.0
 
Feb. 28, 2021, 10 p.m. 1.0 ppb (1) 0.5 ppb (1) N/A 0.0 ppb (0) N/A N/A 45.0 ppb (42) N/A 2.0 μg/m3 (2) 0.0 μg/m3 (0) 42.0
 
Feb. 28, 2021, 9 p.m. 1.0 ppb (1) 0.6 ppb (1) N/A 0.0 ppb (0) N/A N/A 44.0 ppb (41) N/A 5.0 μg/m3 (5) 3.2 μg/m3 (14) 41.0
 
Feb. 28, 2021, 8 p.m. 1.2 ppb (2) 0.7 ppb (1) N/A 0.0 ppb (0) N/A N/A 45.0 ppb (42) N/A 5.0 μg/m3 (5) -0.5 μg/m3 (0) 42.0
 
Feb. 28, 2021, 7 p.m. 1.0 ppb (1) 0.7 ppb (1) N/A 0.0 ppb (0) N/A N/A 44.0 ppb (41) N/A 5.0 μg/m3 (5) 0.4 μg/m3 (2) 41.0
 
Feb. 28, 2021, 6 p.m. 1.1 ppb (2) 0.6 ppb (1) N/A 0.0 ppb (0) N/A N/A 44.0 ppb (41) N/A 10.0 μg/m3 (10) -0.6 μg/m3 (0) 41.0
 
Feb. 28, 2021, 5 p.m. 1.1 ppb (2) 0.6 ppb (1) N/A 1.0 ppb (1) N/A N/A 43.0 ppb (40) N/A 10.0 μg/m3 (10) 4.5 μg/m3 (19) 40.0
 
Feb. 28, 2021, 4 p.m. 1.0 ppb (1) 0.6 ppb (1) N/A 0.0 ppb (0) N/A N/A 41.0 ppb (38) N/A 1.0 μg/m3 (1) 6.9 μg/m3 (29) 38.0
 
Feb. 28, 2021, 3 p.m. 1.1 ppb (2) 0.6 ppb (1) N/A 0.0 ppb (0) N/A N/A 40.0 ppb (38) N/A 2.0 μg/m3 (2) 14.7 μg/m3 (57) 57.0
 
Feb. 28, 2021, 2 p.m. 1.3 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (37) N/A 3.0 μg/m3 (3) 0.9 μg/m3 (4) 37.0
 
Feb. 28, 2021, 1 p.m. 1.1 ppb (2) 0.3 ppb (1) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (37) N/A 2.0 μg/m3 (2) -2.1 μg/m3 (0) 37.0
 
Feb. 28, 2021, noon 0.9 ppb (1) 0.4 ppb (1) N/A 0.0 ppb (0) N/A N/A 40.0 ppb (38) N/A -1.0 μg/m3 (0) 0.0 μg/m3 (0) 38.0
 
Feb. 28, 2021, 11 a.m. 1.2 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A 39.0 ppb (37) N/A 4.0 μg/m3 (4) -0.6 μg/m3 (0) 37.0
 
Feb. 28, 2021, 10 a.m. 1.0 ppb (1) 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A -4.0 μg/m3 (0) 0.3 μg/m3 (2) 2.0
 
Feb. 28, 2021, 9 a.m. 0.9 ppb (1) 0.3 ppb (1) N/A 1.0 ppb (1) N/A N/A N/A N/A N/A 0.6 μg/m3 (3) 3.0
 
Feb. 28, 2021, 8 a.m. 1.1 ppb (2) 0.6 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A N/A 0.0 μg/m3 (0) -0.6 μg/m3 (0) 2.0
 
Feb. 28, 2021, 7 a.m. 0.9 ppb (1) 0.5 ppb (1) N/A 0.0 ppb (0) N/A N/A N/A N/A 4.0 μg/m3 (4) N/A 4.0
 
Feb. 28, 2021, 6 a.m. 0.7 ppb (1) 0.3 ppb (1) N/A 0.0 ppb (0) N/A N/A 41.0 ppb (38) N/A -3.0 μg/m3 (0) 1.8 μg/m3 (8) 38.0
 
Feb. 28, 2021, 5 a.m. 1.0 ppb (1) 0.4 ppb (1) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (38) N/A 6.0 μg/m3 (6) 2.4 μg/m3 (10) 38.0
 
Feb. 28, 2021, 4 a.m. 1.0 ppb (1) 0.5 ppb (1) N/A 0.0 ppb (0) N/A N/A 42.0 ppb (39) N/A 3.0 μg/m3 (3) 0.3 μg/m3 (2) 39.0
 
Feb. 28, 2021, 3 a.m. 2.2 ppb (3) 0.7 ppb (1) N/A 2.0 ppb (2) N/A N/A 39.0 ppb (37) N/A 3.0 μg/m3 (3) 3.6 μg/m3 (16) 37.0
 
Feb. 28, 2021, 2 a.m. 1.5 ppb (2) 0.5 ppb (1) N/A 1.0 ppb (1) N/A N/A 41.0 ppb (38) N/A 6.0 μg/m3 (6) -3.8 μg/m3 (0) 38.0
 
Feb. 28, 2021, 1 a.m. 3.4 ppb (4) 0.9 ppb (1) N/A 2.0 ppb (2) N/A N/A 43.0 ppb (40) N/A 9.0 μg/m3 (9) -1.1 μg/m3 (0) 40.0
 
Feb. 28, 2021, midnight 1.6 ppb (2) 0.8 ppb (1) N/A 1.0 ppb (1) N/A N/A 47.0 ppb (44) N/A 0.0 μg/m3 (0) 1.0 μg/m3 (5) 44.0
 
Feb. 27, 2021, 11 p.m. 1.3 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A 47.0 ppb (44) N/A 1.0 μg/m3 (1) -1.8 μg/m3 (0) 44.0
 
Feb. 27, 2021, 10 p.m. 0.8 ppb (1) 0.5 ppb (1) N/A 0.0 ppb (0) N/A N/A 47.0 ppb (44) N/A -1.0 μg/m3 (0) 1.1 μg/m3 (5) 44.0
 
Feb. 27, 2021, 9 p.m. 1.1 ppb (2) 0.7 ppb (1) N/A 0.0 ppb (0) N/A N/A 47.0 ppb (44) N/A 5.0 μg/m3 (5) 0.3 μg/m3 (2) 44.0
 
Feb. 27, 2021, 8 p.m. 1.3 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A 47.0 ppb (44) N/A 6.0 μg/m3 (6) -0.6 μg/m3 (0) 44.0
 
Feb. 27, 2021, 7 p.m. 0.8 ppb (1) 0.5 ppb (1) N/A 0.0 ppb (0) N/A N/A 47.0 ppb (44) N/A 11.0 μg/m3 (11) 7.2 μg/m3 (31) 44.0
 
Feb. 27, 2021, 6 p.m. 1.0 ppb (1) 0.6 ppb (1) N/A 0.0 ppb (0) N/A N/A 46.0 ppb (43) N/A 9.0 μg/m3 (9) -0.1 μg/m3 (0) 43.0
 
Feb. 27, 2021, 5 p.m. 1.6 ppb (2) 0.7 ppb (1) N/A 1.0 ppb (1) N/A N/A 45.0 ppb (42) N/A 9.0 μg/m3 (9) -2.2 μg/m3 (0) 42.0